"In terms of greenhouse gases, one Google search is equivalent to about 0.2 grams of CO2"
One of many sources
This is in the hardware that drives the internet, the servers, storage units routers etc.
Here's an easy way to save a bit of energy:
Use a (paper) Dictionary, or Encyclopedia
There are plenty of them about, as we've become accustomed to using online references they've fallen out of use somewhat. You may have one at home, or be able to pick one up second-hand,
If it's already been printed and bound, there's no environmental impact.
A hard-copy dictionary or encyclopedia will not let you down if you have a problem with your power, computer, internet connection. (Nuclear-armageddon / zombie attack)
I use mine because they're often quicker and I have the certainty of who published them.
Many people have become accustomed to using the mouse to retrieve information, without moving away from where they are (I don't move much, but I do take my hand off the mouse)
Step 1: Using the Dictionary / Encyclopedia
They are organised alphabetically. Look up the word/name you're after and if it's in there you'll find the definition / information. This involves moving the paper pages with your hands / fingers, a task I'm sure you can manage (but it's an Instructable, so this is instruction)
Look to the top of the pages, the left-hand page will display the first word on the page, e.g. manageable, the right-hand page displays the last, e.g. Manilla
When you find a word / entry, it's formatted to a standard, but to leave the academic formatting aside (as this is a substitute for Google / Wikipedia / Dictionary.com) - if it's on paper it's as good as online, unless you've got a really old book.
Simple Instructable: the instruction is "use the books not the internet"
Unless the topic is long-dead, your version may be a bit out of date: "United States Of America: HEAD OF STATE AND GOVERNMENT - Ronald Regan..." Still, some of the information lasts, e.g. the inside covers of my Hutchinson Encyclopedia (1988) give weights and measures conversions info, with no internet energy cost.
(Thanks to my Mum for giving me these books)
Step 2: Final
It's so simple that it may not really qualify as an Instructable:
If you think so let me know and I'll consider removing it